Removable window



1962 w. M. NEVOTTI REMOVABLE WINDOW Filed June 12, 1959 AGENT 4 R 9 2 M V V VWV/NBW /%/V%/ -u M 3 a I J 4 6 W. M. G 1 l M H w 6 8 4 w F b W Y FIG. 2

United States Patent @fihce 3,622,546 Patented Feb. 27, 1962 3,022,546 REMGVABLE WINDOW William M. Nevotti, 3519 Hawthorne Ave., Omaha, Nebr. Filed June 12, 1959, Ser. No. 819,842 1 Claim. (Cl. -522) This invention relates to windows of the double hung or sliding sash type, and particularly windows wherein weights and other balancing elements are eliminated, and in particular a window having sash with longitudinally disposed undulating strips on opposite edges thereof wherein the undulating strips are positioned to coact with complementary spring actuated longitudinally disposed strips in the sides of a window frame, whereby the sash are readily adjusted vertically in the window frame and wherein the sash are readily removable to facilitate cleaning and repairing, and also readily replaceable.

The purpose of this invention is to provide a window of the double hung type in which weights and other balancing elements are eliminated, in which the sash are readily moved upwardly and downwardly, and in which the sash are removable.

Various attempts have been made to mount sash of windows of the double hung type so that the sash. are readily adjustable vertically and also readily removable, however, it is dificult to make sash that are removable so that the sash slide freely upwardly and downwardly in the window frames.

With this thought in mind this invention contemplates window sash having udulated elements at both sides and wherein undulated elements in the window frames are yielding or urged outwardly by springs so that high points of the undulations of the sash slide over high points of the undulations of the window frame, and wherein high points of the undulations of the sash nest in low portions of the undulations of the window frame so that the sash are secured in adjusted positions.

The object of this invention is, therefore, to provide means for installing undulating strips between sash and frames of the windows so that the sash slide freely and are readily removable.

Another object of the invention is to provide means for mounting sash in window frames so that the windows are sealed against winter winds and the like.

More particularly it is an object of this invention to provide a window having vertical undulating complementary surfaces disposed opposite each other and attached to the sash and window respectively, and particularly in which the said surfaces extend substantially the entire height of the window and window sash.

Another major objective of my invention is to provide a window having a construction working in cooperation and in combination with this structure for completing the wind barrier effect.

Still another objective is to provide a window as described in which the undulating surfaces are gradually curved to such a point that they are best described as wavy rather than bumpy whereby the waves themselves permit the raising of the window with ease and without the frustrating resistance of sharply curved or bumpy surfaces.

Still another object is to provide in combination such features as make it possible for the window to be removed from the sash for cleaning.

A further object is to provide a window of this type having springs on both sides for particular ease of removal.

A still further object is to provide a window of the double hung type having undulating strips of yielding material at the sides of the sash for securing the sash in adjusted positions without weights or other balancing elements in which the window is of simple and economical construction.

With these and other objects and advantages in view the invention embodies a window frame, sash slidably mounted in the window frame and separated by parting strips, undulating strips of material on the edges at the sides of the sash, complementary undulating strips of material in the sides of the window frame and positioned to coact with the undulating strips on the sash, and springs positioned behind the undulating strips of mate-' rial in the window frame for urging the undulating strips of the frame into engagement with the undulating strips of the sash.

Other features and advantages of the invention will appear from the following description taken in connection with the drawings, wherein:

FIGURE 1 is a front elevational view of a window frame having upper and lower sash therein and wherein the sash are retained in adjusted positions by undulating strips of material.

FIGURE 2 is a vertical section through the window frame shown in FIGURE 1, with the parts shown on an enlarged scale, parts being broken away.

FIGURE 3 is a sectional plan through one side of the window frame taken on line 3-3 of FIGURE 1, with the parts shown on an enlarged scale, and showing the relative positions of the undulating strips of material between the sash and window frame.

FIGURE 4 is a perspective view showing the mounting of the undulating strips of material in the window frame.

FIGURE 5 is a sectional plan through one of the undulating strips of material, with the parts shown on an enlarged scale.

FIGURE 6 is a sectional plan through one of the side rails of the sash with the parts shown on an enlarged scale, and showing the recess for the undulating support; and also a continuous groove for receiving flanges of the strip of the frame and channel bar.

While one embodiment of the invention is illustrated in the above referred to drawings, it is to be understood that they are merely for the purpose of illustration and that various changes in construction may be restored to in the course of manufacture in order that the invention may be utilized to the best advantage according to circumstances which may arise, without in any way departing from the spirit and intention of the device, which is to be limited only in accordance with the appended claims. And while there is stated the primary field of utility of the invention it remains obvious that it may be employed in any other capacity wherein it may be found applicable.

In the accompanying drawings, and in the following specification, the same reference characters are used to designate the same parts and elements throughout and in which the numeral 10 refers to the invention in its entirety, numeral 12 an elongated undulating support positioned in a recess 14 in each side of a sash 16 and extended continuously throughout the length of the sash, numerals 13 and 2d undulating springs mounted on each side of a. window frame 22, and numerals 24 and 26 undulating strips positioned against the springs and integral with channel bars between the undulating strips and parting strips.

The undulating supports 12, as shown in section in FiGURE 5, are provided with side walls 28 and 30, the outer edges of which are undulating, and the inner edges of which are provided with flanges 32 and 34 that nest in the recesses 14. The outer undulating surfaces of the supports 12 are positioned to coact with corresponding surfaces 36 and 38 of the strips 24 and 26, as shown in FIGURE 4, wherein upon upward or downward movemea at a s sh the hi h p nts of, t e undulations of the sash ride over high points of the undulations of the strips of the frame thereby compressing the springs, and with continued movement of the sash the high points of the supportsthereof come to rest in the low points of the strips of the frame, thereby completely sealing the sides of the frame, and also permitting the sash to bereadily removed.

With the high points of the undulating supports of the sash nested in the low points of the undulating strips of the window frame the sash is locked in position, and although it may not be advisable to move a sash one inch only, it would be possible to stop the sash every three inches with the undulations spaced at three inch intervals. Three inches is only suggested as an illustration, as the undulations or waves may be spaced any suitable dimension.

The undulating strips in the sides of the frame are formed, as shown in FIGURES 3 and 4, with undulating plates 49 upon which the surfaces 36 and 38 are positioned, and the edges of the plates 40 meet with extended undulating edges of side walls 42 and 44 which extend from webs 46 and 48. The outer edge of the web 48 is provided with a flange 59 to which is secured an L-shaped brace. 52 having an arm 54 on the inner end, and the arm is positioned to extend into a recess 56 in the inner surface of a blind stop or bead 58. The web 46 is provided with a flange 60 that is integrally secured to a flange 62 of a channel bar 64 and a flange 66 on the opposite side of the channel, bar is secured to a, brace 68, which isv also L- shaped, and an arm 70 of the brace 68 extends into a recess 72 in the side of the parting strip 74. With the arms 54 and 7!) extended into the recesses 56 and 72, re-

spectively outward movement of the undulating strips 24' a the arm 76- of a brace 78, at the outer side extends into a recess 8,0. infthe inner side of the parting strip 74, and the arm 82 of'the brace 84 at the inside of the undulating strip 24 extends into a recess 86 .of the stop or inner bead 88. The stop 88 and parting strip 74 may be secured to a &6

4. the sash are positively locked in adjusted positions and, at the same time either the upper or lower sash may be moved upwardly or downwardly with ease.

The arrangement of the undulating or wavy strips and supports also provides positive seals at the sides of the window, and, not having connections to sash weights or other balancing means, the sash are readily removable.

From the foregoing specification it will'becoroe apparent that the invention disclosed will adequately accomplish the functions for which it has been designed and an economical manner and that its simplicity, accuracy and ease of operation are such as to provide a relatively injarnb 90 by screws 92, and, as shown in FIGURE 3, the

The edges; of the sash are also provided with grooves.

1 00. that are positioned to receive the flanges 60 of the webs 46 of the undulating strips 24 and 26-, and 62 of the channel bars to; further seal the spaces between the sash;

and frame.

Operation With the window assembled as illustrated and described expensive device considering what it will accomplish and that it will find an important place in the art to which it appertains when once placed on the market.

it is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. lengthy description is regarded as unnecessary.

Changes ,inshape, size and rearrangement of details and parts such as come within the purview of the invention claimed may be resorted to, in actual practice if desired.

Having now described the invention that which is claimed to be new and desired to be procured by Letters Patent is:

In a window structure, the combination which comprises a window frame having parting strips and blind stops therein, sash in the frame, undulating strips slidably mounted between the parting strips and blind stops and extended continuously throughout the height of the window structure, said undulating strips being integral with channel bars positioned intermediate of said undulating strips and said parting strips and blind stops, undulating supports positioned against said undulating strips, springs behind said undulating strips for urging the undulating strips. into sealing relation with the undulating supports of the sash, the edges or" the parting strips and blind stops having longitudinally disposedgroo-ves spaced inwardly from the. edges thereof and flanges on the channel, bars that are integral with the undulating strips of the frame, and an L-shaped brace on each of said flanges, each of said L-shaped braces having an arm on the inner end thereof, and said arms are extended'into the grooves of the parting strips and blind stops for sealing said sash against said frame.

References Cited in the fileof this patent UNITED STATES PATENTS 1,977,975 Schuler Oct. 23, 1934 2,303,129 Kurtz Nov. 24, 1942 2,619,690 Kinish Dec. 2, 1952 2,630,891 Zitomer Mar; 10, 1953 2,643,422 Gottschalk June 30, 1953 Therefore, a more a 1 i l 1 

